IBHRE practice exam #1 questions with correct answers

Wenkebach window - correct answer Max tracing interval(in ms) - TARP(in ms) 2:1 Block Point - correct answer 60,000/TARP Basic unit of capacitance - correct answer Farad Function of pacemaker circuitry that allows the pacemaker output pulse to be dissipated quickly maximizing both output and sensing capabilities - correct answer Charge dump Av sequentially paced pts with frequent ventricular ectopy should have what programmed to decrease chance of competition - correct answer Short blanking period Low threshold electrode materials include - correct answer Iridium oxide, platinized platinum, titanium nitrate Formula for strength duration curve resulting in parabolic shape - correct answer I x V x T The most commonly used battery chemistry in ICDs - correct answer Lithium silver vanadium oxide What is the purpose of a capacitor in an electrical circuit - correct answer Store electrical charge All of the following have been used as ERI magnet responses except: - abrupt increase in rate - abrupt decrease in rate - gradual increase in rate - gradual decrease in rate - correct answer Abrupt decrease in rate